\chapter{Methodology}
%Todo: Research question, Is it feasible to do push to talk over MANets and does the quality degrade as the number of nodes between peers increase.


%Note all stats should include the mean and its std deviation.

%Simulated
%* We need to check for reliable message delivery
%* We need to check for time to deliver (how accurate is this on the simulator?)
%* We need to check for number of conversations on the network at the same time
%* Simulation may also allow us to check for program robustness as the simulator provides signal degradation and packet loss

%Real use
%* We need to check for type of conversations held on this system
%* The length of conversational bursts
%* The length of messages sent
%* The number of times the system was used (over time as well? increase in popularity?)
%[ Need to check for the type of experiments done by other researchers]


%* Prototyping

%\section{Research Method}

%* Simulation
%* Simulation Engine, Alternatives
%* Fading Model
%* Path loss
%* Spatial
%* Placement
%* Mobility
%* Interference
%* Link type
%* Network type
%* Routing used (Should this be changed and the results compared?)
%* Transportation (udp, tcp)
%* 

The chosen methodology is experimental computer science.

%\section{Experimental Design}

%* we explain the system architecture here.
%* We should the SwanStack then show the hierarchy and architecture possessed by Project

A group of users will test the software under varying conditions. One group will test software which does not adapt to the network changes, the other group's software will adapt. At the end of the trial the data will be collected and the interviews performed.

%\section{Data Collection}

%* Free Attitude Interviews
%* System Logging
%* Perceived vs. Quantitative Data
Two sets of data will be collected.

\begin{itemize}
\item System generated data
\item Interview data
\end{itemize}

The system generated data will be what we use to compare to the participant's answers.  There will be a control set as well as the actually experimental data.

%\section{Justification of Chosen Research Method}

This research will be started by doing a literature survey. From this literature knowledge will be gained which will allow access to the next phase of the research, building a prototype. This way of thinking is based on the methodology of experimental computer science. As Feitelson put it, experimental computer science is based on observations, hypothesis testing as scientific reproducibility \cite{Feitelson2006Experimental-Co}. Schmandt, a researcher from MIT, created two systems using this methodology -- Impromtu, a mobile Internet Protocol based computer mediated audio platform, and SimPhony, a wireless distributed workgroup voice controlled audio communication system. The systems were developed from set of requirements, these systems were then evaluated.

%The prototype will then be laboratory tested using various simulations. A further literature survey will be conducted to better understand the results obtained from these tests.